Finding the Fourth Proportional to 56,572.32, 78,071.76 and 31,424.16

Step by Step Solution

1. Step 1: Write the proportion equation
   56,572.32 : 78,071.76 = 31,424.16 : x
2. Step 2: Convert to fraction form
   56,572.32/78,071.76 = 31,424.16/x
3. Step 3: Cross multiply
   56,572.32x = 78,071.76 × 31,424.16
4. Step 4: Simplify right side
   56,572.32x = 2,453,339,477.72
5. Step 5: Solve for x
   x = 2,453,339,477.72/56,572.32
6. Step 6: Final answer
   x = 43,366.43